/// <summary>
/// 将DataTable資料導出到EXCEL,調用該方法後自動傳回可下載下傳的檔案流
/// </summary>
/// <param name="dtData">要導出的資料源</param>
public static void DataTable1Excel(System.Data.DataTable dtData)
{
System.Web.UI.WebControls.GridView gvExport = null;
// 目前對話
System.Web.HttpContext curContext = System.Web.HttpContext.Current;
// IO用于導出并傳回excel檔案
System.IO.StringWriter strWriter = null;
System.Web.UI.HtmlTextWriter htmlWriter = null;
if (dtData != null)
{
// 設定編碼和附件格式
curContext.Response.ContentType = "application/vnd.ms-excel";
curContext.Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");
curContext.Response.Charset = "utf-8";
// 導出excel檔案
strWriter = new System.IO.StringWriter();
htmlWriter = new System.Web.UI.HtmlTextWriter(strWriter);
// 為了解決gvData中可能進行了分頁的情況,需要重新定義一個無分頁的GridView
gvExport = new System.Web.UI.WebControls.GridView();
gvExport.DataSource = dtData.DefaultView;
gvExport.AllowPaging = false;
gvExport.DataBind();
// 傳回用戶端
gvExport.RenderControl(htmlWriter);
curContext.Response.Write("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=gb2312\" />" + strWriter.ToString());
curContext.Response.End();
}
}
/// <summary>
/// 直接輸出Excel
/// </summary>
/// <param name="dtData"></param>
public static void DataTable2Excel(System.Data.DataTable dtData)
{
System.Web.UI.WebControls.DataGrid dgExport = null;
// 目前對話
System.Web.HttpContext curContext = System.Web.HttpContext.Current;
// IO用于導出并傳回excel檔案
System.IO.StringWriter strWriter = null;
System.Web.UI.HtmlTextWriter htmlWriter = null;
if (dtData != null)
{
// 設定編碼和附件格式
curContext.Response.ContentType = "application/vnd.ms-excel";
curContext.Response.ContentEncoding =System.Text.Encoding.UTF8;
curContext.Response.Charset = "";
// 導出excel檔案
strWriter = new System.IO.StringWriter();
htmlWriter = new System.Web.UI.HtmlTextWriter(strWriter);
// 為了解決dgData中可能進行了分頁的情況,需要重新定義一個無分頁的DataGrid
dgExport = new System.Web.UI.WebControls.DataGrid();
dgExport.DataSource = dtData.DefaultView;
dgExport.AllowPaging = false;
dgExport.DataBind();
// 傳回用戶端
dgExport.RenderControl(htmlWriter);
curContext.Response.Write(strWriter.ToString());
curContext.Response.End();
}
}
/// <summary>
/// dtData是要導出為Excel的DataTable,FileName是要導出的Excel檔案名(不加.xls)
/// </summary>
/// <param name="dtData"></param>
/// <param name="FileName"></param>
private void DataTable3Excel(System.Data.DataTable dtData, String FileName)
{
System.Web.UI.WebControls.GridView dgExport = null;
//目前對話
System.Web.HttpContext curContext = System.Web.HttpContext.Current;
//IO用于導出并傳回excel檔案
System.IO.StringWriter strWriter = null;
System.Web.UI.HtmlTextWriter htmlWriter = null;
if (dtData != null)
{
//設定編碼和附件格式
//System.Web.HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8)作用是方式中文檔案名亂碼
curContext.Response.AddHeader("content-disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8) + ".xls");
curContext.Response.ContentType = "application nd.ms-excel";
curContext.Response.ContentEncoding = System.Text.Encoding.UTF8;
curContext.Response.Charset = "GB2312";
//導出Excel檔案
strWriter = new System.IO.StringWriter();
htmlWriter = new System.Web.UI.HtmlTextWriter(strWriter);
//為了解決dgData中可能進行了分頁的情況,需要重新定義一個無分頁的GridView
dgExport = new System.Web.UI.WebControls.GridView();
dgExport.DataSource = dtData.DefaultView;
dgExport.AllowPaging = false;
dgExport.DataBind();
//下載下傳到用戶端
dgExport.RenderControl(htmlWriter);
curContext.Response.Write(strWriter.ToString());
curContext.Response.End();
}
}
/// <summary>
/// Datatable to Excel帶自定檔案名的導出
/// </summary>
/// <param name="dt"></param>
/// <param name="FileName"></param>
private void DataTable4Excel(System.Data.DataTable dt, string FileName)
{
System.IO.StringWriter stringWriter = new System.IO.StringWriter();
HtmlTextWriter htmlWriter = new HtmlTextWriter(stringWriter);
DataGrid excel = new DataGrid();
//System.Web.UI.WebControls.TableItemStyle AlternatingStyle = new TableItemStyle();
System.Web.UI.WebControls.TableItemStyle headerStyle = new TableItemStyle();
//System.Web.UI.WebControls.TableItemStyle itemStyle = new TableItemStyle();
//AlternatingStyle.BackColor = System.Drawing.Color.LightGray;
headerStyle.BackColor = System.Drawing.Color.LightGray;
headerStyle.Font.Bold = true;
headerStyle.HorizontalAlign = System.Web.UI.WebControls.HorizontalAlign.Center;
//itemStyle.HorizontalAlign = System.Web.UI.WebControls.HorizontalAlign.Center; ;
//excel.AlternatingItemStyle.MergeWith(AlternatingStyle);
excel.HeaderStyle.MergeWith(headerStyle);
//excel.ItemStyle.MergeWith(itemStyle);
excel.GridLines = GridLines.Both;
excel.HeaderStyle.Font.Bold = true;
excel.DataSource = dt.DefaultView; //輸出DataTable的内容
excel.DataBind();
//for (int i = 0; i < excel.Items.Count; i++)
//{
// //excel.Columns[3].ItemStyle.CssClass = "xlsText";
// //excel.Items[i].Cells[3].Style.Add("mso-number-format", "");
// for (int j = 0; j < aColTxtFormat.Length; j++)
// {
// int nCol = aColTxtFormat[j];
// excel.Items[i].Cells[nCol].Attributes.Add("style", "vnd.ms-excel.numberformat:@");
// }
}
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